This handbook is a selection of foundational aspects, security analysis, platforms, and applications of blockchains that consists of four parts. The first part introduces the basic building blocks such as distributed computing and cryptography. Consensus algorithms that form the basic backbone of blockchain protocols are presented. Various cryptographic tools like hash functions, digital signatures and commitment schemes are also introduced. Advanced cryptographic techniques such as zero knowledge protocols, secret sharing, verifiable random functions that are used for privacy-preserving and secure design are discussed.  The second part of this handbook consists of popular blockchain designs and platforms. Architecture of Bitcoin, Ethereum, Monero, Tendermint and Algorand have been presented. Various important issues like scalability and security are discussed in the third part. Security design challenges, security vulnerabilities and their analysis are discussed. The final part of this handbook discusses various applications of blockchains. These include supply-chain, identity and credential management, Internet of Things (IoT), data-sharing, e-voting, e-governance, e-health, smart cities, and Industry 4.0. Research challenges and directions of future work are included in this handbook. This comprehensive reference targets students and researchers, who are starting to explore blockchain. Professionals working in blockchain security and applications will find this handbook to be a valuable reference.

This book constitutes the proceedings of the 16th International Conference on Information Systems Security, ICISS 2020, held in Jammu, India, during December 16-20, 2020.The 11 regular papers, 2 short papers and 3 work-in-progress papers included in this volume were carefully reviewed and selected from a total of 53 submissions. The papers were organized in topical sections named: access control; AI/ML in security; privacy and Web security; cryptography; and systems security.

This exciting book will explore how Blockchain (BC) technology has the potential to overcome challenges in the current cyber-physical system (CPS) environment. BC is a timestamp ledger of blocks that is used for storing and sharing data in a distributed manner. BC has attracted attention from practitioners and academics in different disciplines, including law, finance, and computer science, due to its use of distributed structure, immutability and security and privacy. However, applying blockchain in a cyber-physical system (CPS) is not straightforward and involves challenges, including lack of scalability, resource consumption, and delay. This book will provide a comprehensive study on blockchain for CPS. CPS and the existing solutions in CPS and will outline the limitations are presented. The key features of blockchain and its salient features which makes it an attractive solution for CPS are discussed. The fundamental challenges in adopting blockchain for CPS including scalability, delay, and resource consumption are presented and described. Blockchain applications in smart grids, smart vehicles, supply chain; and IoT Data marketplaces are explored. The future research directions to further improve blockchain performance in CPS is also provided.